It's a replica of the Unusual Coins, use as a money in the "Destiny" video game from Bungie.
This coin that is uncommon is not cool to the touch and vibrates lightly in your hand.
Those odd coins are accustomed to purchase powerfull weapons and armors from Xûr, the cryptic "representative of the Nine".
The "Head" side of the coin, with the green circle, is modelized by myself. The "Tail" component, with the Nine symbol, is modelized by MéloW. The paint job is done by myself, using acrylic paint.